These 34mm D20's are stunning and have both the 1 face and the 20 face open for customization. The minimum order is for 1 unit and costs $50 USD + Shipping for the Adamantium. A normal D20 is about 20mm in size. These are made at the standard 34mm Oversize which allows for more detailed engravings than the smaller 25mm D20's. The Marbled Adamantium 34mm D20's are a perfect match to our Adamantium dice set.